Broker WS handlers:
- kick: disconnect peer(s) by name, --stale duration, or --all.
Authz: owner or admin only. Closes WS + marks presence disconnected.
- ban: kick + set revokedAt on mesh.member. Hello already rejects
revoked members, so ban is instant and permanent until unban.
- unban: clear revokedAt. Peer can rejoin with their existing keypair.
- list_bans: return all revoked members for a mesh.
Session-id dedup (previous commit): handleHello disconnects ghost
presences with matching (meshId, sessionId) before inserting the new
one. Eliminates duplicate entries after broker restarts.
CLI (alpha.37):
- claudemesh kick <peer|--stale 30m|--all>
- claudemesh ban/unban <peer>
- claudemesh bans [--json]
- Uses new sendAndWait() on ws-client for request-response pattern
over WS (generic _reqId resolver).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
